LT3030

RECOMMENDED FOR NEW DESIGNS

Dual 750mA/250mA Low Dropout, Low Noise, Micropower Linear Regulator

Part Models: 14
1ku List Price: Starting From $3.92

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Overview

Output Current: 750mA/250mA
Low Dropout Voltage: 300mV
Low Noise: 20μV_RMS (10Hz to 100kHz)
Low Quiescent Current: 120μA/75μA
Wide Input Voltage Range: 1.7V to 20V
Adjustable Output: 1.220V Reference Voltage
Shutdown Quiescent Current: <1μA
Stable with 10μF/3.3μF Minimum Output Capacitor
Stable with Ceramic, Tantalum or Aluminum Electrolytic Capacitors
Precision Threshold for Shutdown Logic or UVLO Function
PWRGD Flag for each Output
Reverse Battery and Reverse Output-to-Input Protection
Current Limit with Foldback and Thermal Shutdown
Thermally Enhanced 20-Lead TSSOP and 28-Lead (4mm × 5mm) QFN Packages

The LT3030 is a dual, micropower, low noise, low dropout linear regulator. The device operates with either common or independent input supplies for each channel, over a 1.7V to 20V input voltage range. Output 1/Output 2 supply 750mA/250mA respectively with a typical dropout voltage of 300mV. With an external 10nF bypass capacitor, output noise is only 20μV_RMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 120μA/75μA quiescent current makes it an ideal choice. In shutdown, quiescent current drops to less than 1μA. Shutdown control is independent for each channel and its precision logic threshold allows for voltage lockout functionality. The LT3030 includes a PWRGD flag for each channel to indicate output regulation.

The LT3030 optimizes stability and transient response with low ESR ceramic output capacitors, requiring a minimum of only 10μF/3.3μF.

Internal circuitry provides reverse-battery protection, reverse-current protection, current limiting with foldback and thermal shutdown with hysteresis. The adjustable output voltage device has a 1.220V reference voltage. The LT3030 is offered in the thermally enhanced 20-lead TSSOP and 28-lead, low profile (4mm × 5mm × 0.75mm) QFN packages.

Applications

General Purpose Linear Regulator
Battery-Powered Systems
Microprocessor Core/Logic Supplies
Post Regulator for Switching Supplies
Tracking/Sequencing Power Supplies

Part Models: 14
1ku List Price: Starting From $3.92

Documentation

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT3030EFE#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030EFE#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030EUFD#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030EUFD#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030HFE#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030HFE#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030HUFD#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030HUFD#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030IFE#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030IFE#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030IUFD#PBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030IUFD#TRPBF	28-Lead QFN (4mm x 5mm x 0.75mm w/ EP)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030MPFE#PBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT3030MPFE#TRPBF	20-Lead TSSOP w/ EP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Feb 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper
		PCN25_0017_Form Material_Report Qualification Results Summary
LT3030EFE#PBF	PRODUCTION
LT3030EFE#TRPBF	PRODUCTION
LT3030EUFD#PBF	PRODUCTION
LT3030EUFD#TRPBF	PRODUCTION
LT3030HFE#PBF	PRODUCTION
LT3030HFE#TRPBF	PRODUCTION
LT3030IFE#PBF	PRODUCTION
LT3030IFE#TRPBF	PRODUCTION
Apr 6, 2022 - 22_0068 Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL
		PCN22_0068_Form Material_Report Delta Qualification Matrix
LT3030EFE#PBF	PRODUCTION
LT3030EFE#TRPBF	PRODUCTION
LT3030HFE#PBF	PRODUCTION
LT3030HFE#TRPBF	PRODUCTION
LT3030IFE#PBF	PRODUCTION
LT3030IFE#TRPBF	PRODUCTION
LT3030MPFE#PBF	PRODUCTION
LT3030MPFE#TRPBF	PRODUCTION
Feb 20, 2022 - 21_0269 Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products
		PCN21_0269_Form Material_Report Detailed Change Description Qualification Results Summary
LT3030EUFD#PBF	PRODUCTION
LT3030EUFD#TRPBF	PRODUCTION
LT3030HUFD#PBF	PRODUCTION
LT3030HUFD#TRPBF	PRODUCTION
LT3030IUFD#PBF	PRODUCTION
LT3030IUFD#TRPBF	PRODUCTION
Apr 14, 2025 - 25_0017 Bond Wire Change from Gold to Copper
		PCN25_0017_Form Material_Report Qualification Results Summary
LT3030HUFD#PBF	PRODUCTION
LT3030HUFD#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Hardware Ecosystem

Parts	Product Life Cycle	Description
LDO Linear Regulators 1
LT3029	RECOMMENDED FOR NEW DESIGNS	Dual 500mA/500mA Low Dropout, Low Noise, Micropower Linear Regulator
Power System Management (PSM) & Sequencers 1
LTC2974	RECOMMENDED FOR NEW DESIGNS	4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
Protection Switches & Controllers 2
LTC4417	RECOMMENDED FOR NEW DESIGNS	Prioritized PowerPath^™ Controller
LTC4365	RECOMMENDED FOR NEW DESIGNS	Overvoltage, Undervoltage and Reverse Supply Protection Controller

Tools & Simulations

LTspice 1

LT3030 Demo Circuit - Dual, µPower, Low Noise Linear Regulator (2.2-20V to 1.8V @ 750mA & 1.5V @ 250mA)

Models for the following parts are available in LTspice:

LT3030

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

Evaluation Kits

LT3030 Demo Board | Dual, Low Noise, Micropower Linear Regulator 2.2V ≤ VIN ≤ 20V, VOUT1/VOUT2 = 1.5V/1.8V/2.5V/3.3V/5V @ 750mA/250mA

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Product Details

Demonstration circuit 1855A is a dual, micropower, low noise and low dropout voltage linear regulator featuring the LT3030. The input voltages are independent for each channel of DC1855A and can range from 2.2V to 20V. Each channel has a jumper that sets the output voltage to either 1.5V, 1.8V, 2.5V, 3.3V, 5V or a voltage that is user-programmed by the installation of a resistor. For channel 1 and channel 2, the maximum output currents are 750mA and 250mA and the ceramic output capacitors are 22μF and 10μF respectively. The internal reference of each channel is bypassed with a 10nF capacitor for reduced output noise. Each channel has a jumper for shutdown and a terminal for PWRGD that is pulled up to the input supply. A resistor divider can be easily added that allows precise lockout at low input voltages.

Resources

DC1855A - Schematic
3/25/2013

DC1855A - Demo Manual
3/21/2013

DC1855A - Design Files
3/25/2013

Reference Designs

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Features and Benefits

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